Native file dialog support for Mac

* New API: QPlatformDialogHelper to support native dialog on QPA.
    (Currently, It supports only file dialog.)
* Modify QDialog* and QFileDialog* to support native dialog.
* Add native file dialog support to cocoa platform plugin.

Change-Id: I957f046748a27a33fd9f8af3c525feabd1b0f582
Reviewed-by: Morten Johan Sørvig <morten.sorvig@nokia.com>

2 files changed, 16 insertions, 0 deletions

diff --git a/src/gui/kernel/qplatformintegration_qpa.cpp b/src/gui/kernel/qplatformintegration_qpa.cpp
index 97c2445529..605cc5de59 100644
--- a/src/gui/kernel/qplatformintegration_qpa.cpp
+++ b/src/gui/kernel/qplatformintegration_qpa.cpp
@@ -250,6 +250,18 @@ QPlatformMenuBar *QPlatformIntegration::createPlatformMenuBar(QMenuBar *menuBar)
     return 0;
 }
 
+bool QPlatformIntegration::usePlatformNativeDialog(QDialog *dialog) const
+{
+    Q_UNUSED(dialog);
+    return false;
+}
+
+QPlatformDialogHelper * QPlatformIntegration::createPlatformDialogHelper(QDialog *dialog) const
+{
+    Q_UNUSED(dialog);
+    return 0;
+}
+
 /*!
   Should be called by the implementation whenever a new screen is added.
 
diff --git a/src/gui/kernel/qplatformintegration_qpa.h b/src/gui/kernel/qplatformintegration_qpa.h
index 0ccd9f96d3..6dd87495b4 100644
--- a/src/gui/kernel/qplatformintegration_qpa.h
+++ b/src/gui/kernel/qplatformintegration_qpa.h
@@ -68,6 +68,7 @@ class QMenuBar;
 class QPlatformMenu;
 class QPlatformMenuBar;
 class QPlatformAccessibility;
+class QPlatformDialogHelper;
 
 class Q_GUI_EXPORT QPlatformIntegration
 {
@@ -104,6 +105,9 @@ public:
     virtual QPlatformMenuBar *createPlatformMenuBar(QMenuBar *menuBar = 0) const;
     virtual QPlatformAccessibility *accessibility() const;
 
+    virtual bool usePlatformNativeDialog(QDialog *dialog = 0) const;
+    virtual QPlatformDialogHelper *createPlatformDialogHelper(QDialog *dialog = 0) const;
+
 // Access native handles. The window handle is already available from Wid;
     virtual QPlatformNativeInterface *nativeInterface() const;